Abstract

Hemisorubim platyrhynchos is a medium- to large-sized pimelodid catfish distributed along several river basins of the Neotropical Region, noteworthy for representing an important fishery source. In this work, H. platyrhynchos from three isolated populations were cytogenetically analyzed. The karyotype shows a diploid number of 2n=56 chromosomes comprising 22m, 16sm, 10st, 8a (FN=104). NORs detected by AgNO3 were located in the terminal regions of the short arm of a st chromosome pair, as confirmed by CMA3 and FISH using an 18S rDNA probe. C-banding revealed a small amount of heterochromatin in chromosomes, including the NORs, and one biarmed pair that showed conspicuous positive bands on both arms. This fact was also evidenced when using other banding techniques, such as RE (AluI), and indicates that this pair constitutes a species-specific cytogenetic marker.

Addeddate

2025-03-16 15:50:08

Bhl_virtual_titleid

210879

Bhl_virtual_volume

v.7:no.2 (2013)

Call number

10_3897_compcytogen_v7i2_4901

Call-number

10_3897_compcytogen_v7i2_4901

Foldoutcount

0

Genre

article

Identifier

cytogeneticspor7swar

Identifier-ark

ark:/13960/s2xth9bjjn4

Identifier-bib

10_3897_compcytogen_v7i2_4901

Identifier-doi

10.3897/compcytogen.v7i2.4901

Issue

2

Ocr

tesseract 5.3.0-6-g76ae

Ocr_detected_lang

en

Ocr_detected_lang_conf

1.0000

Ocr_detected_script

Latin

Ocr_detected_script_conf

1.0000

Ocr_module_version

0.0.21

Ocr_parameters

-l eng

Page_number_confidence

84

Page_number_module_version

1.0.5

Page_range

103-110

Pages

8

Pdf_degraded

invalid-jp2-headers

Pdf_module_version

0.0.25

Possible copyright status

In copyright. Digitized with the permission of the rights holder.

Ppi

300

Source

Comparative Cytogenetics 7(2)

Year

2013

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